The Geological Survey of Canada owns and operates slim hole geophysical sondes and recording equipment for use in PVC cased boreholes in unconsolidated overburden. Such holes are commonly drilled and cased for overburden stratigraphic or geotechnical studies related to on-going GSC projects....

Contained within the 4th Edition (1974) of the Atlas of Canada is a map that shows geologic structural features and denotes tectonic elements by a color-coding system. There are also descriptive elements and features of tectonic elements which are displayed.

The Geological Survey of Canada owns and operates slim hole geophysical sondes and recording equipment for use in PVC cased boreholes in unconsolidated overburden. Such holes are commonly drilled and cased for overburden stratigraphic or geotechnical studies related to on-going GSC projects....

The Geological Survey of Canada owns and operates slim hole geophysical sondes and recording equipment for use in PVC cased boreholes in unconsolidated overburden. Such holes are commonly drilled and cased for overburden stratigraphic or geotechnical studies related to on-going GSC projects....

The Geological Survey of Canada owns and operates slim hole geophysical sondes and recording equipment for use in PVC cased boreholes in unconsolidated overburden. Such holes are commonly drilled and cased for overburden stratigraphic or geotechnical studies related to on-going GSC projects....

The Geological Survey of Canada owns and operates slim hole geophysical sondes and recording equipment for use in PVC cased boreholes in unconsolidated overburden. Such holes are commonly drilled and cased for overburden stratigraphic or geotechnical studies related to on-going GSC projects....

The Geological Survey of Canada owns and operates slim hole geophysical sondes and recording equipment for use in PVC cased boreholes in unconsolidated overburden. Such holes are commonly drilled and cased for overburden stratigraphic or geotechnical studies related to on-going GSC projects....

The Geological Survey of Canada owns and operates slim hole geophysical sondes and recording equipment for use in PVC cased boreholes in unconsolidated overburden. Such holes are commonly drilled and cased for overburden stratigraphic or geotechnical studies related to on-going GSC projects....

Contained within the 3rd Edition (1957) of the Atlas of Canada is a plate that shows the physiographic regions as well as the physiographic divisions at different scales, explaining the topography and rock types within Canada.

The geologic time scale divides the 4.6 billion years of earths history into hierarchy of time periods. Every layer of rock corresponds to a specific time in the history of the formation of the Earth. The Precambrian era began with the formation of the Earth; it was followed by the Paleozoic,...